检索结果-南通市图书馆

Lacustrine Basin fills in an Early Cretaceous Half-Graben, Jiuquan Basin, NW China: Controlling Factors and Implications for Source Rock Depositional Processes and Heterogeneity

引用

Journal of Earth Science 2019年第1期30卷 158-175页

作者： Chengcheng Zhang Hua Wang Si Chen Junjie Yu Yuantao Liao Zongsheng Lu Jun Wei Nanjing Center China Geological Survey Key Laboratory of Tectonics and Petroleum Resources Ministry of Education China University of Geosciences School of Earth Sciences China University of Geosciences PetroChina Yumen Oilfield Company

Studies on basin fills have provided significant insights into reservoir distribution and prediction in petroliferous basins, however, the effect of basin fills on source rock properties has been underexplored. This paper documents basin filling characteristics and their implications for depositional processes and heterogeneity of source rock in the Qingnan subsag of the Jiuquan Basin, by using subsurface geological data from recent hydrocarbon exploration efforts in this area. Drill core data reveals that the basin fill of the Qingnan subsag was dominated by fan delta-lacustrine systems, in which deposition of the fan deltas along the basin margin was mainly through gravity flows. The temporal and spatial evolution of the depositional systems indicates that the basin fill was characterized by a continuously retrogradational process, with decreasing extent of fan deltas in vertical succession. Weakening of tectonic activities and climate change from humid to semi-arid are interpreted to be the main control factors that were responsible for the retrogradational basin fill. The different depositional environments in the early stage and late stage of the retrogradational basin filling history resulted in the different depositional processes and properties of source rocks. This study suggests that source rock heterogeneity associated with basin fills in lacustrine basins should be considered in hydrocarbon exploration.

关键词： basin fills source rock depositional process rift basin Jiuquan Basin

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Shear behavior of sand-expanded polystyrene beads lightweight fills

引用

Journal of Central South University 2008年第S2期15卷 174-179页

作者：邓安肖杨 Geotechnical Research Institute Hohai University Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai University

Through direct shear and triaxial compression tests, effects of expanded polystyrene (EPS) mass ratios in sand-EPS mixtures and stress status on materials' shear behavior were investigated. Hyperbolic curves were used to fit relationship between shear stress and shear displacement. The shear behavior is marginally associated with the EPS ratios and normal/confining stresses. Increases of EPS ratios and decreases of normal/confining stresses result in shear strength decreases. The shapes of Mohr-Coulomb's envelope include linear and piecewise linear types, which are basically determined by the EPS ratio. Such difference is thought related to the embedding or apparent cohesion effect under relatively high EPS ratio conditions. Shear strength parameters can be used for further modeling and design purposes.

关键词： expanded polystyrene lightweight fills shear strength mixing ratios strength envelope sands

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of initial particle gradation and rock content on crushing behaviors of weathered phyllite fills——A case of eastern Ankang section of Shiyan—Tianshui highway,China

引用

Journal of Rock Mechanics and Geotechnical Engineering 2020年第2期12卷 269-278页

作者： Feifei Liu Xuesong Mao Yushuo Fan Linping Wu Wei Victor Liu School of Highway Chang'an UniversityXi'anChina Shijiazhuang Transportation Survey and Design Institute ShijiazhuangChina Department of Civil and Environmental Engineering University of AlbertaEdmontonCanada

The objective of this paper is to investigate the effects of initial particle gradation and rock content on the crushing behavior(*** size before and after crushing) of weathered phyllite *** tests were conducted on weathered phyllite fills with rock contents of 35%,45%,55%,65% and 75%(by weight).First,the particle size distributions(PSDs) were observed before and after compaction,and then the particle breakage of weathered phyllite fills was analyzed by fractal *** fractal dimension was proposed to evaluate the effects of initial rock content and initial gradation on the particle *** was found that the fractal dimension method can well characterize the crushing behaviors of the weathered phyllite *** finer the fills were,the more they were *** is,after the first compaction,the relative fractal dimension of the weathered phyllite fills increased as the rock content increased,reaching the values of 0.013,0.016,0.024,0.037 and 0.08,*** the second compaction,these relative fractal dimension values,dominated by the initial particle gradation,became 0.059,0.072,0.052,0.095 and 0.118,*** conclusion,the weathered phyllite fills with 55% rock content exhibited the least breakage and were most suitable for filling the *** in this paper will provide significant guidance for the construction of weathered phyllite filling subgrade in future projects.

关键词： Weathered phyllite fills Crushing behavior Compaction test Fractal dimension Relative fractal dimension

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Inner Mongolia rare earth vocational skills standard fills industry gap

引用

China Rare Earth Information 2024年第2期30卷 24-25页

According to the Inner Mongolia Autonomous Regional State-owned Assets Supervision and Administration Commission,China Northern Rare Earth Hi-Tech Group *** recently compiled and released its first rare earth vocationa ski s *** standard fills a gap in China's rare earth industry and provides crucial support for the training and evaluation of skilled personnel in rare earth enterprises.

关键词： standard earth rare fills industry inner mongolia skills vocational

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：